5
Cable connection
indoor unit QE
power supply
Section
2.5 mm
2
x 3
4.0 mm
2
x 3
4.0 mm
2
x 3
Models
3.0
7.8
9.0 INV.
External unit power
connection cable
Section
2.5 mm
2
x 3
4.0 mm
2
x 3
4.0 mm
2
x 3
Switch
magnetermic
Section
16 A curv. D
20 A curv. D
20 A curv. D
Cable
C-1-2
Section
1,50 mm
2
x 3
4.0 mm
2
x 3
4.0 mm
2
x 3
Cable
Pb3
Section
0,75 mm
2
x 4
0,75 mm
2
x 4
0,75 mm
2
x 4
Table 1 - Cable specifications HUB RADIATOR PLUS/PLUS SOLAR
2. CONNECTIONS U.E. / U.I.
2.1 GENERAL PROVISIONS
1) The HUB RADIATOR PLUS / PLUS SOLAR system is
designed to work exclusively with the indoor unit positioned
inside the building to be heated and the booster outside.
2) During the installation phase you must carefully check that the
distance and the difference in height between the 2 units
comply with the data shown in this manual.
3) Before installation, check that the wall is where you are
chosen to position the internal accumulation to be able to
withstand the weight of the accum. and the water contained in it.
4) In case of replacement of an existing generator carry out the
cleaning the system and adding a special anti-algae additive.
5) The moment you choose to install the HUB system
RADIATOR PLUS / PLUS SOLAR, the electrical absorption of
the outdoor unit must be taken into account. Then prepare all
the necessary works to adapt the electrical system (meter,
cable section, magnetothermic switches, etc.) to ensure
proper operation and a constant voltage between 220V and
240V in correspondence with the power cables of the outdoor
unit. With voltage below 220V it is mandatory to install a
voltage stabilizer capable of guaranteeing the admissible
voltages indicated above, otherwise any type of guarantee is
void.
2.2 ELECTRICAL CONNECTIONS
Connect the cable to the electrical panel:
1) The connection cable of the indoor and outdoor unit must to
be kind H07RN-F.
2) Lift up the electrical box panel and remove the screws, then
remove the cover.
3) Connect the cables according to the markings. Connect the
cable to the outdoor unit:
4) Remove
the
cover
of
the
outdoor
unit.
5) Connect the terminal cables according to the numbers on the
unit terminal block, respecting the sections shown in the table 1
6) Secure the cables so that they do not come into contact with
parts electric or metal.
2.3 INSTALLING THE PIPES FOR THE REFRIGERANT R410A
The main cause of refrigerant gas leaks is due to a defect in
the flare. Carry out the folders correctly, respecting the following
indications:
A) Cut the pipes and the cable (Fig. 1)
- Use pipes with adequate measures for the installed unit (table 2).
- Measure the distance between the indoor and outdoor unit.
- Cut the pipes to a length slightly greater than distance
measured.
- Cut the 1.5 m electric cable. longer than the length of the tube
B) Burr removal (Fig. 2)
- Completely remove all burrs from the section cross section of
the tube.
- The processing must be performed with the end of the tube
down so that burrs do not fall into the tube.
C) Folding (Fig. 3)
Remove the nuts fixed on the indoor and outdoor unit, insert them
on the pipe and perform the flaring and removal of the burrs, as
previously indicated
D) Placement of the nut
Firmly fix the copper pipe with a nut of the size indicated in table 3.
E) Securing the connection (Fig. 4)
Align the pipes. Sufficiently tighten the nut and tighten it with two
wrenches as shown in the figure.
Precautions
- Excessive torque can break the nut.
Table2 Diameter connections refrigerant R410A
___________________________________________________
Model
Ø LIQUID
Ø GAS
___________________________________________________
3.0
1/4”
3/8”
___________________________________________________
7.8
1/4”
5/8”
___________________________________________________
9.0 INV
3/8”
5/8”
___________________________________________________
Pipe cutting
Fig. 1
Burr removal
Fig. 2
Folding
Fig. 3
Fixing
Fig. 4
Table3 - Tightening torque
___________________________________________________
Diameter
Tightening torque (N / m)
___________________________________________________
Ø 3/8
42
___________________________________________________
Ø 5/8
65
___________________________________________________
Ø 1/4
18
___________________________________________________
